TWENTY-FIB ST ANNUAL MEETING. 97 



27. Spaetina Schreb. 



a. Culm 3-6 (or more) feet high, leaves 2-4 feet long 94 



a. Culm 1-2 feet high, slender, leaves narrow and rush-like 95 



94. Sptartina cynosuroicles Willd.; Cord grass, Marsh grass. 



95. S. juncea Willd.; Marsh grass, Salt grass, Rush Salt grass. 



28. Chlobis Swz. 

 a. Culm compressed, branched at base, spikes filiform 96 



96. Chloris verticillata Nutt. 



29. Gymnofogon Beauv. 

 a. Flowers on long filiform spikes crowded into a raceme 97 



97. Gymnopogon racemosus Beauv.; Naked Beard grass. 



30. Schedonnakdus Steud. 

 a. Panicle consisting of slender, naked, triangular spikes 98 



98. Scheclonnardus Texanus Stead.; Texas Spike grass. 



31. Boutelotja Lag. 



a. Spikes pectinate oblong or linear, solitary or few, in a raceme (b). 



a. Spikes short, in a long virgate one-sided spike or raceme 101 



b. Glumes with dark, warty glands and bristly hairs, sterile flower glabrous 99 



b. Glumes soft, hairy, pedicel of sterile flower villous-tufted 100 



99. Bouteloua hirsuia Lag.; Bristly Mesquite, Gramma grass. 



100. B. oligostachya Torr.; Mesquite grass, Gramma grass. 



101. B. racemosa Lag.; Tall Gramma grass. 



32. Eleusine Gaert. 



a. Spikes digitate, spikelets on one side of a flattish rachis 102 



102. Eleusine Indica Gaert.; Yard grass, Crow-foot, Crab grass, Wire grass. 



33. Leptocheoa Beauv. 

 a. Flowers in a long, panicled raceme, spikes slender, numerous 103 



103. Leptochloa mucronata Kth.; Feather grass, Slender grass. 



34. Buchloe Englm. 

 a. Dioecious, very small, pistillate flowers inconspicuous 104 



104. Buchloe dactyloides Englm.; Buffalo grass, False Mesquite grass. 



35. Muneoa Torr. 

 a. Flowers in leafy heads or clusters; stems rigid, creeping 105 



105. Munroa squarrosa Torr.; False Buffalo grass. 



36. Pheagmites Trin. 

 a. A very tall swamp grass, with a large terminal panicle 106 



106. Phragmites communis Trin.; Reed grass. 



37. Tbiodia R. Br. 



a. Panicle large purplish, loose; spikelets lanceolate 107 



a. Panicle contracted, 3-5 inches long; spikelets few, ovate, turgid 10S 



a. Panicle spike-like, dense, 6 in. long, } in. wide ; spikelets nearly as long as broad 109 



a. Panicle dense and ovoid or very simple and of few spikelets (b). 



b. Stems with usually a single node, panicle ovoid, 1-2 inches long. 110 



b. Stems with numerous bearded joints, panicles very simple, axillary ones included Ill 



107. Triodia cuprea Jacq.; Tall Red-Top. 



—7 



